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Question 1

A computer network is a group of connected computers that communicate with each other.

Answer 1

T

Question 2

A Local Area Network (LAN) would be used to connect computers located in Seattle and Philadelphia.

Answer 2

F

Question 3

The university would employ a WAN to connect its Denver and Boulder campuses.

Answer 3

T

Question 4

The way you access your accounts through an ATM is an example of a Protocol.

Answer 4

T

Question 5

The NIC is the unique identifier on every device.

Answer 5

F

Question 6

The core in optical fiber cables is wrapped with cladding, which contains the light rays.

Answer 6

T

Question 7

The most popular protocol for LANs is the IEEE 802.3 protocol.

Answer 7

T

Question 8

The 802.11b standard is the dominant WLAN standard today.

Answer 8

F

Question 9

TCP/IP is an example of an LAN protocol.

Answer 9

T

Question 10

An ISP functions as a gateway to the Internet.

Answer 10

T

Question 11

A PPP protocol is used for networks that involved just two computers.

Answer 11

T

Question 12

Broadband lines include dial-up and cable modems.

Answer 12

F

Question 13

Narrowband transmission speeds typically do not exceed 56 kbps.

Answer 13

T

Question 14

ADSLs have different upload and download transmission speeds.

Answer 14

T

Question 15

Switches or routers may be used to connect each site to the transmission lines.

Answer 15

T

Question 16

A router is a special purpose computer.

Answer 16

T

Question 17

A PSDN is an access device for providing high speed Internet.

Answer 17

F

Question 18

A Virtual Private Network (VPN) is a type of WAN.

Answer 18

T

Question 19

A tunnel is a virtual, private pathway over a public or shared network from the VPN client to the VPN server.

Answer 19

T

Question 20

VPNs enable remote access with point-to-point leased lines.

Answer 20

T

Question 21

Loss rate is the frequency of problems in the communications network that necessitate data retransmission.

Answer 21

T

Question 22

HTTPS is a protocol for secure communication over the Internet.

Answer 22

T

Question 23

With symmetric encryption, different keys are used; one key encodes the message, and the other key decodes the message.

Answer 23

F

Question 24

Symmetric encryption is simpler and much faster than asymmetric encryption.

Answer 24

T

Question 25

A protocol is a standardized means for coordinating an activity between two or more entities.

Answer 25

T

Question 26

The ISO developed TCP/IP layered protocol.

Answer 26

F

Question 27

The Internet has adopted the TCP/IP-OSI architecture.

Answer 27

T

Question 28

FTP, HTTP and SMTP are application-layer protocols.

Answer 28

T

Question 29

The TCP program breaks messages down into packets.

Answer 29

T

Question 30

Email programs operate primarily at the transport layer.

Answer 30

F

Question 31

IP addresses are also called physical addresses.

Answer 31

F

Question 32

Every NIC is given a MAC address at the factory.

Answer 32

T

Question 33

IP addresses are not permanently associated with a given hardware device.

Answer 33

T

Question 34

Switches employ a table to tell it where to direct traffic.

Answer 34

T

Question 35

Routers use a routing table to tell it where to send traffic.

Answer 35

T

Question 36

The process of changing public IP addresses into private IP addresses is called Network Address Translation (NAT).

Answer 36

F